/Engine/Source/Runtime/Experimental/GeometryCollectionEngine/Public/GeometryCollection/GeometryCollectionParticlesData.h
const [Chaos::TUniformGrid](API\Runtime\Chaos\Chaos\TUniformGrid)< [Chaos::FReal](API\Runtime\ChaosCore\Chaos\FReal), 3 > & GetGeometryLevelSetGrid ( int32 Index ) const